Arcana Coelestia # 9756
9756. 'The hangings shall be fifty cubits' means the quantity of truths needed for the purposes they have to serve. This is clear from the meaning of 'the hangings of the court' as truths such as they are in the lowest heaven, dealt with above in 9743; and from the meaning of 'fifty' as all belonging to one side, and also a sufficient amount. 'Fifty' is similar in meaning to 'five' (for what 'five' means, see 9604, 9689), and therefore also means the quantity needed for the purposes they have to serve, since this is a sufficient amount.
Arcana Coelestia # 9689
9689. 'And you shall make for the screen five pillars of shittim [wood]' means a sufficient amount of support provided by the uniting intermediary through the good of merit belonging to the Lord's Divine Human. This is clear from the meaning of 'the screen in place of the tent door' as the intermediary uniting the second or middle heaven to the first or lowest, dealt with above in 9686; from the meaning of 'five' as that which exists partially or in some measure, dealt with in 4638, and also a sufficient amount; from the meaning of 'pillars' as support, dealt with in 9674; and from the meaning of 'shittim wood' as the good of merit, which, being the Lord's alone - dealt with in 9472, 9486 - accordingly belongs to His Divine Human, for This is what merit truly belongs to, 9486.